32 lines
1.1 KiB
Go
32 lines
1.1 KiB
Go
package echo
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import (
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"encoding/json"
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"fmt"
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"net/http"
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)
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// DefaultJSONSerializer implements JSON encoding using encoding/json.
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type DefaultJSONSerializer struct{}
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// Serialize converts an interface into a json and writes it to the response.
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// You can optionally use the indent parameter to produce pretty JSONs.
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func (d DefaultJSONSerializer) Serialize(c Context, i interface{}, indent string) error {
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enc := json.NewEncoder(c.Response())
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if indent != "" {
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enc.SetIndent("", indent)
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}
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return enc.Encode(i)
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}
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// Deserialize reads a JSON from a request body and converts it into an interface.
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func (d DefaultJSONSerializer) Deserialize(c Context, i interface{}) error {
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err := json.NewDecoder(c.Request().Body).Decode(i)
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if ute, ok := err.(*json.UnmarshalTypeError); ok {
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return NewHTTPError(http.StatusBadRequest, fmt.Sprintf("Unmarshal type error: expected=%v, got=%v, field=%v, offset=%v", ute.Type, ute.Value, ute.Field, ute.Offset)).SetInternal(err)
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} else if se, ok := err.(*json.SyntaxError); ok {
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return NewHTTPError(http.StatusBadRequest, fmt.Sprintf("Syntax error: offset=%v, error=%v", se.Offset, se.Error())).SetInternal(err)
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}
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return err
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}
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